F02D 41/0072
Estimating, calculating or determining the egr rate, amount or flow
Official title: {Estimating, calculating or determining the EGR rate, amount or flow (sensors in EGR systems F02M26/45)}
F02D41/0072 (Estimating, calculating or determining the egr rate, amount or flow) appears on 786 US grants and 714 published applications in this corpus.
Search patents in F02D- Granted patents
- 786
- Published applications
- 714
- Assignees
- 165
- Inventors
- 1,409
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 23 | 0 |
| 2001 | 20 | 3 |
| 2002 | 15 | 28 |
| 2003 | 22 | 22 |
| 2004 | 27 | 17 |
| 2005 | 20 | 15 |
| 2006 | 26 | 28 |
| 2007 | 24 | 22 |
| 2008 | 17 | 19 |
| 2009 | 9 | 38 |
| 2010 | 21 | 31 |
| 2011 | 22 | 32 |
| 2012 | 19 | 40 |
| 2013 | 27 | 37 |
| 2014 | 30 | 35 |
| 2015 | 39 | 60 |
| 2016 | 60 | 43 |
| 2017 | 47 | 36 |
| 2018 | 48 | 53 |
| 2019 | 45 | 47 |
| 2020 | 57 | 38 |
| 2021 | 42 | 24 |
| 2022 | 29 | 15 |
| 2023 | 17 | 15 |
| 2024 | 17 | 5 |
| 2025 | 3 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- Sensor system and method14 Jul 2026US 12,680,516 B2Transportation IP Holdings, LLC
- Engine system3 Mar 2026US 12,565,869 B2Mazda Motor Corporation
- Exhaust gas recirculation and aftertreatment control30 Dec 2025US 12,510,036 B2Perkins Engines Company Limited
- Signal expected range for a vehicle19 Aug 2025US 12,394,260 B2Robert Bosch GmbH
- Exhaust gas recirculation system, engine system, control method of exhaust gas recirculation system, and control program1 Oct 2026US 2026/0298182 A1Yanmar Holdings Co., Ltd.
- Exhaust monitoring apparatus6 Aug 2026US 2026/0226858 A1Toyota Jidosha Kabushiki Kaisha
- System and method for adaptive control of air-to-fuel ratio18 Jun 2026US 2026/0168452 A1Caterpillar Inc.
- Exhaust gas recirculation system23 Apr 2026US 2026/0110282 A1Kabushiki Kaisha Toyota Jidoshokki
- Engine control system and methods16 Apr 2026US 2026/0104015 A1Innio Waukesha Gas Engines Inc.
Most cited
By later US patents
- System and method for monitoring and detecting faults in a closed-loop system118US 8,700,360 B2Cummins Intellectual Properties, Inc. · 2014
- Control method for a variable geometry turbocharger in a diesel engine having exhaust gas recirculation107US 6,067,800 AFord Global Technologies, LLC · 2000
- Control system98US 7,016,779 B2Cambridge Consultants Limited · 2006
- Fuel/air ratio control for internal combustion engine78US 6,058,906 ANissan Motor Co., Ltd. · 2000
- Method for controlling combustion in an internal combustion engine and predicting performance and emissions78US 7,392,129 B2Westport Power Inc. · 2008